Monday

January 26, 2015

January 26, 2015

Posted by **sarah** on Sunday, May 20, 2007 at 5:23pm.

a) an angle of 150 degrees is equivalent to 2pie/3 radians.

b) Cos 0 = cos (0 – pie/2) for al values of 0.

c) Sin 0 = cos (0 – pie/2) for all values of 0.

d) If triangle ABC has a right angle at B, then sin A = cos C

e) In any triangle ABC, if the lengths of just two sides of the triangle are known, then you always calculate the third.

f) In any triangle ABC,AB sin C = AC sin B

g) If triangles PQR and XYZ are similar, with P = X, Q = Y, R = Z, then XY/PQ = XZ/PR

h) In any triangle PQR, cos R = PR^2 + PQ^2 – QR^2/ 2 x PR x PQ.

CAN ANY 1 HELP ME ON WHICH 3 OPTIONS ARE RIGHT??

Which have you eliminated? I takes just a min to go thru each ansewer.

i think its d and e and i dont knw wat cod be the third option, is this ryt?

**Answer this Question**

**Related Questions**

maths - Choose three options which are true: a) an angle of 150 degrees is ...

maths - Choose the two options which are true for all values of x 1) cos (x) = ...

maths - choose one option which is the equivalent in radians of an angle of 135 ...

Algebra II - Multiple Choice (theta) means the symbol 0 with the dash in it. 1.)...

maths - 1. Prove using mathematical induction that 1+2+3+...+n=[ n(n+1)]/2 2. ...

maths - 1. Prove using mathematical induction that 1+2+3+...+n=[ n(n+1)]/2 2. ...

Calculus grade 12 - solve for (<_ = less than or equal to / pie = pie sign...

Maths - Two angles of triangle are pie/6 and 2pie/3 radians. What is the measure...

MATHEMATICS - evaluate :- lim (existing from n to infinity)1/n^2 [1/1+cos(pie/2n...

trigonometry (please double check this) - Solve the following trig equations. ...